ml320 1999 -upgrade to GPS head Unit

I have a 1999 ml320 that came with the bose single head unit casette player. I want to upgrade to the GPS/ Navigation head unit with the screen. Can  this be done . Rightnow there is a blank space underneith the casette unit. ON the top of the suv on the back is the cap for the GPS antenna...can someone help me with this?

Hi,

Check this page, it has the info that you are looking for. It tell you what parts you need and step by step instrucion how to do it.

http://www.imageevent.com/benza/dvdnavigationretrofit

Hope it help you

Sam